<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>留言表</title>
</head>
<body>
<form>
    <fieldset id="">
        <legend>留言板</legend>
        <label>
            姓名：
            <input type="text" name="username" id="x">
        </label><br>
        <label>
            任课老师:
            <select name="teacher">
                <option value="张三">张三老师</option>
                <option value="李四" selected="selected">李四老师</option>
                <option value="王五">王五老师</option>
            </select>
        </label><br>
        <label>
            <textarea rows="10" cols="10" name="留言内容"></textarea>
        </label><br>
        <label>
            <input type="reset" value="清空">
        </label>
        <label>
            <input type="submit" value="留言">
        </label>
    </fieldset>
</form>
</body>
</html>